Needle holder for a relooping needle



April 26 1938. B. H. GOSTKOWSKI NEEDLE HOLDER FOR A RELOOPING NEEDLE 2 Sheets-Sheet 1 Filed Nov. 7, 1936 INVENTOR= BEDRI HUSSEIN GOSTKOWSKI 5% ,w w ATTORNEYS y \bll Iihllilli Illull April 26, 1938. B. GOSTKOWSKI 2,115,100

NEEDLE HOLDER FOR A RELOOPING NEEDLE Filed Nov. 7, 19:56 2 Sheets-Sheet 2 F104. a l 28 6/ 0 F106. F101 ATTO'RNEMS Patented Apr. 26, 1938 UNITED STATES NEEDLE HOLDER FOR A RELOOPING NEEDLE Bedri Hussein Gostkowski, Geneva, Switzerland, assignor to Societe Vitos, Troyes, France Application November 7, 1936, Serial No. 109,656

. In Switzerland November 8, 1935 r 10 Claims.

This invention relates to a needle holder for a relooping needle operated by means of a flexible wire eifecting a reciprocating movement which same transmits to the needle by means of at least one elastic member.

In the needle holder according to the invention, the movable part thus drawn along has such a freedom of movement that the same can freely operate under the influence of its inertia although same is extremely light.

The accompanying drawings show'some embodiments of the invention given by way of example.

Fig. 1 is a partial elevation and partial section, showing the holder with two elastic members.

Fig. 2 is a section on the line II- -II of Fig. 1.

Fig. 3 is a detail of the needle holder of Fig. 1.

Figs. 4 and 5 show in diagram two different positions of the members of a needle holder with a single spring.

Figs. 6 and 7 show in diagram a needle holder similar to that of the Figs. 4 and 5, but in which the action of the spring can be momentarily annulled.

Fig. 8 is a partial longitudinal section of a nee dle holder constructed according to the diagrams of Figs. 6 and 7 and shows the means whereby the action of the spring may be annulled.

Fig. 9 is a detail on a larger scale of a part of said means.

Fig. 10 is a View similar to Fig. 1, but on a larger scale of a needle holder with a single spring of gradually variable tension.

Fig. 11 is a section on the line XIXI of Fig. 10;

The needle holder shown in Figs. 1 to 3 consists of a flanged sleeve 1 the end of which oppositea bottom 2 is obturated by a stopper made of two parts 3, 4 held together by means of the screws 5, the part 3 being adapted to rotate with regard to the part 4 integral with the sleeve I. Two rods 6 integral with the part 4, extend parallelly along and inside the sleeve and are immobilized at their free ends by the bottom 2. A tube 1 fixed to the part 3, guides a flexible wire 8 intended to transmit a reciprocating movement to the relooping needle 9. g

Said needle is fixed to a rod I0, integral with a cyl nder I l which is adapted to slide axially along the rods 6, and which is guided on theone hand by the fact that some flanges I2 are in contact with said rods, on the other by the fact that the rod ill passes through the opening in the bottom 2. Said guiding which engages only extremely small surfaces offers practically no resistance to the free movement of the movable part formed by the cylinder ll the rod l9 and the needle 9.

The end of the cylinder opposite the needle is closed by a stopper l3 traversed by the flexible wire 8, the end of which is connected to a piston M. Finally, said piston is engaged between two springs l5, l6 enclosed in the cylinder II.

By means of any device, but preferably by means of the apparatus described in the patent application Ser. No. 109,657, filed Nov. '7, 1936, simultaneously filed and copending herewith, entitled Apparatus for operating a reloopingnee dle, a rapid reciprocating movement is given to the flexible wire 8 relatively to the tube 1, a movement which is consequently also executed by the piston M by compressing now one, now the other of the two springs l5, H5. The energy received is .in its turn transmitted to the movable part.

The practically completeliberty of movement of said movable part will, under the influence of the impulses received, make same move by virtue of its inertia and in both directions beyond the amplitude of the movement executed by the piston. The amplitude obtained depends in fact on said inertia and there is needed .but a very slight variation in the mass of the movable part to modify said amplitude, which also varies, automatically with the speed, same being greater at the high than at the low speeds, and also immediately diminishing if the fabric under work cflfers unaccustomed resistance.

Wherefore, the work eifected by the needle is eflected by means of the energy stored and returned by the movable part, independently of the. power of the motor used to drive the flexible wire. Now, as said movable part is extremely light, that is to say of a weight round about two grams, the slightest resistance slows down same without any effort and the stitches cannot be torn.

To give the maximum liberty possible to the movable part, by diminishing all the friction, the piston I l could be shaped as shown at M in Fig.

3, in which the circle-:l-lrepresents the inside wall of the cylinder ll. 1

It is further necessary that it should'be possible for such a needle holder to be held very lightly, without same however vibrating'under the rapid movements of the movablepart. To this end, the sleeve 1 passes, at least partially, through a spherical body H, which is easily' gripped and presenting, although made of light material, a mass which is relatively great with regard to that of the movable part. 'Said spherical body can be made of cork, rubber, fibre, ebony, wood, etc.

Instead of eifecting the elastic transmission by means of two springs, it is also possible to effect same by means of a single spring, as shown in Figs. 4 and 5. The advantage realized is that of,

in a' pipe carrying the needle 2!. To the flxiblewire 22 are fixed two abutments 23, 2 4,. the second of which is guided by the pipe 20. tween said abutments the two washers 25, 26 enclosed in the cylinder H] are engaged and between said washers is located the single spring 21.

Whenthe flexible wire 22 efiects its reciprocat ing movement, this is what happens:

As the flexible wire is drawn along in the direction of the arrow 28 of Fig. l, the abutment 24 draws along thewasher 26 and compresses the spring 21. against the washer 25, which is held back by the cylinder [9, to which said washer transmits the impulse received. The cylinder with theneedlezrises in the direction of the arrow 28.

As the flexible wire is then pushed back in the direction of the arrow 29 of Fig. 5', it is the abutmerit 23 .that meets in its turn thewasher 1 which compresses the spring against the washer 26,51ikewiseheld back by the cylinder to which same transmits the'impulse received. 'The cylinder with the needle is lowered in the direction ofthe arrow 29; I

. For certain kinds of Work, it'may be useful,

whileyet-disposing of an extremely adaptable me'chanism as theone just described, to annul (r therefrom momentarily the adaptability in order to-reloop a coarser material. i Figs. 6 and 7 show how the embodiment of the needle holder of Figs. 4 and 5 can be modified so 'that it may be possible to work at will either withgthe elastic connection or without any elastic. connection. The construction shown is'similar to' that of Figs. .4 and 5; but the abutment 24' sliding in the'pipe 20, comprises a circular groove 30 them.

into which the pins 3! canbe introduced. In

the position of said pins according to Fig. 6, the

abutment 24 is adapted to slide freely in the pipe '20 v'and't he needle holder works exactlyas described with referenceto Figs. 4 and 5. In'the introducedposition of said pins, according to Fig.7, the abutment 24'becomes integral with the pipe 20 and consequently it can be said that theflexible wire .22 and the pipe 20 make but one' piece. The needle is then forced to follow exactly the displacements of the flexible wire, without any elastic member being placed between The working of the pins3! can be realized in practice, as shown in Fig.8, in which the sleeve l8, the cylinder IS, the pipe 28, the'abutment 24,

the washer 25 and a portion of the needle 2! are .seen once again.

c5 7 3 3 which is accessible from the 'outside'at 34 and V .'WhlCh is capable of acting on the pins 3| by V ,jefiect' is suppressed. By i aking theclip33 slide in the direction of the arrow'35, the abutment 24 'is freed from the. action of the pins 3!, because 75 same, as shownin 9, are subjected to the The'pipe' 20 carries the ears 3 2, guiding a clip means of its curved, bent ends' 35. Inthe posi:

tion ishown' in'Fig. 8, the,pins 3| penetratejnto the groove. 30 ofthe abutment 24 and the elastic action of the small springs 31. At that moment, the elastic transmission is reestablished.

Finally Figs. 10 and 11 show how instead of letting the elastic transmission act or of suppressing same completely, said elastic transmis sion may within broad limits be made adjustable, so thatit may be adapted approximately to the quality of fabric that is being relooped.

Said embodiment consists of the same elements as the preceding embodiments and is of the type acting with one spring and working therefore in the Way described with reference to Figs. 4 and 5.

The flexible Wire arrives at 38 through the tube 39, passes through the stopper made of the two pieces 40, 4|, the portion of which is adapted to turn in the portion 4|, withwhich the sleeve 42 engaged in the spherical body 43 is integral. In said sleeve extend longitudinally the two guides 44 for the cylinder 45 inside of which is located the spring 46. Said spring is confined between another tube extending in'the cylinder 45 and serving for fixing the needle 56 by means of a tightening device 51.

Finally the sleeve 42 and the-tube'55 are open. 7,

' at 58 and 59 to permit access to the thumbwheel 5| and to make same rotate as well'as the tube 51!, while the washer 48 is angularly' immobilized by the guide pins 6?] guiding same radially in the grooves 5| of the cylinder 45.

The working of the needle holder is identical With that represented 'in Figs. 4 and5. The spring 46 acts on the upper portion of the cylinder 45 by means of the washer 41 and on the lower portion by means ofthe washer 48 and of the edge .62 of the tube 59. The flexible wire acts on the other hand, on the upper partQby' means of the abutment 52 and on the. lower part bymeans of the abutment 53 and of the tube-50. It is "however to be remarked that bymaking the tube 5E9 rotate, the washer48 can'be moved axially and thus diminish the free distance existing between same and the washerfl, and this increases the tension of the spring 45.: It is 'due The small spring 63 serves to deaden the'eventual shocks between'the washer to this, that it is possible to adjust the tension of i the spring: the needleholder works as if it pos sessed an interchangeable spring, that is tosay capable of being replaced, at will, by other springs 1 :of different force.

4 1 and the upper end of the threaded portion 49 of thetubeSfl.

What-I claim is:-.- V 1. In a needle holder fora relooping'ne'gdl receive the needle and be operated by a flexible wire effecting a reciprocating movement which the same transmits to the needle by means of at least one elastic member, the combination of unalterednon-clamping guide means for guiding having a movable needle holder part adaptedto V the movable part of the needleholder causing said needle holder partthusdrawn along to have such a freedom of movement that said movable part canbe subjectedduring operationto the influence of its inertia.v I

20 the washers-4i and 48,- the washer 48 forming a least one elastic member, the combination of un-' dle by means of at least one elastic member, the movable part of the needle holder thus drawn along having such a liberty of movement that said movable part can be submitted to the influence of its inertia and a member containing the movable part passing at least partly through a spherical body permitting of gripping the holder and presenting a relatively big mass with regard to that of the movable part.

3. A needle holder for a relooping needle operated by a flexible wire effecting a reciprocating movement which same transmits to the needle by means of at least one elastic member, the movable part of the needle holder thus drawn along having such a liberty of movement that said movable part can be submitted to the influence of its inertia and a spring surrounding the end of the flexible wire being located in a cylinder and between two abutments of the flexible wire, against which same bears by means of washers enclosed in the cylinder, in which said washers can slide and into which the abutments can penetrate, said cylinder forming the chief portion of the movable part. 7

4. A needle holder for a relooping needle operated by a flexible wire effecting a reciprocating movement which same transmits to the needle by means of at least one elastic member, the movable part of the needle holder thus drawn along having such a liberty of movement that said movable part can be submitted to the influence of its inertia and a spring surrounding the end of the flexible wire being located'in a cylinder and between two abutments of the flexible wire, against which same bears by means of washers enclosed in the cylinder, in which said washers can slide and into which the abutments can penetrate, said cylinder forming the chief portion of the movable part, the washers being polygonal so as to touch the wall of the cylinder only by points.

5. A needle holder for a relooping needle operated by a flexible wire effecting a reciprocating movement which same transmits to the needle by means of at least one elastic member, the movable part of the needle holder thus drawn along having such a liberty of movement that said movable part can be submitted to the influence of its inertia and a spring surrounding the end of the flexible Wire being located in a cylinder and between two abutments of the flexible wire, against which same bears by means of washers enclosed in the cylinder, in which said washers can slide and into which the abutments can penetrate, said cylinder forming the chief portion of the movable part, the cylinder having a tubular extension of its end bearing the needle and in which is guided longitudinally a prismatic member forming one of the abutments.

6. In a needle holder for a relooping needle having a movable needle holder part adapted to receive the needle and be operated by a flexible wire effecting a reciprocating movement which the same transmits to the needle by means of at altered non-clamping guide means for guiding the movable part of the needle holder causing said needle holder part thus drawn along to have such a freedom of movement that said movable part can be subjected during operation to the influence of its inertia, means being provided to permit of modifying the deadening eiiect produced by the elastic member drawing along the movable part.

7. A needle holder for a relooping needle operated by a flexible wire effecting a reciprocating movement which same transmits to the needle by means of at least one elastic member, the movable part of the needle holder thus drawn along having such a'liberty of movement that said movable part can be submitted to the influence of its inertia, bolting means being provided by means of which the movable part can be firmly connected to the flexible wire.

8. A needle holder for a relooping needle op-' erated by a flexible wire effecting a reciprocating movement which same transmits to the needle by means of at least one elastic member, the movable part of the needle holder thus drawn along having such a liberty of movement that saidmovable part can be submitted to the influence of its inertia, guide pins being provided which can be made to penetrate into a part to be bolted in order that the movable part can be firmly connected to'the flexible wire.

9. In a needle holder for a relooping needle having a movable needle holder part adapted to' receive the needle and be operated by a flexible wire efiecting a reciprocating movement which the same transmits to the needle by means of at least one elastic member, the combination of un- 10. In a needle holder for a relooping needle having a movable needle holder part adapted to receive the needle and be operated by a flexible wire effecting a reciprocating movement which the same transmits to the needle by means of at least one elastic member, the combination of unaltered non-clamping guide means for guiding the movable part of the needle holder causing said needle holder part thus drawn along to have such a freedom of movement that said movable part can be subjected during operation to the influence of itsinertia, the holder being provided with a rotative member of the movable part, which is accessible from the outside and carries a screw thread and a circular nut, possible for said circular nut being displaceable by the rotation of the rotative member, so as more or less to compress the elastic member.

BEDRI HUSSEIN GOSTKOWSKI. 

